Summary Of Significant Accounting Policies (Carrying Value Of Indebtedness And Corresponding Estimate Of Fair Value) (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net		$ 1,714	$ 0
Sales-type lease receivable, net		13,704	12,811
Mortgage notes payable, net		4,166,379	3,272,368
Unsecured senior notes, net		10,491,617	10,237,968
Unsecured line of credit		0	0
Unsecured term loan, net		1,198,301	730,000
Related Party
Summary Of Significant Accounting Policies [Line Items]
Related party note receivable, net		88,779	78,576
Carrying Amount [Member]
Summary Of Significant Accounting Policies [Line Items]
3-Month United States Treasury Bills	[1]	302,746	0
Sales-type lease receivable, net		13,704	12,811
Total		104,197	91,387
Mortgage notes payable, net		4,166,379	3,272,368
Unsecured senior notes, net		10,491,617	10,237,968
Unsecured line of credit		0	0
Unsecured term loan, net		1,198,301	730,000
Total		15,856,297	14,240,336
Carrying Amount [Member] | Related Party
Summary Of Significant Accounting Policies [Line Items]
Related party note receivable, net		88,779	78,576
Carrying Amount [Member] | Nonrelated Party
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net		1,714	0
Estimated Fair Value [Member]
Summary Of Significant Accounting Policies [Line Items]
3-Month United States Treasury Bills	[1]	302,746	0
Sales-type lease receivable, net		13,338	13,045
Total		105,608	92,265
Mortgage notes payable, net		3,705,513	2,744,479
Unsecured senior notes, net		9,697,393	9,135,512
Unsecured line of credit		0	0
Unsecured term loan, net		1,196,945	730,000
Total		14,599,851	12,609,991
Estimated Fair Value [Member] | Related Party
Summary Of Significant Accounting Policies [Line Items]
Related party note receivable, net		90,593	79,220
Estimated Fair Value [Member] | Nonrelated Party
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net		$ 1,677	$ 0

[1] Per the guidance in ASC 326, the Company concluded that the risk of nonpayment is nonexistent because the U.S. Government has a long history with no credit losses and therefore, no credit loss allowance was recorded.